Four Midas Auto Service locations in San Jose are among 22 shops under investigation by the state Department of Consumer Affairs’ Bureau of Automotive Repair.

The bureau filed a 100-page report following a three-year investigation of Midas franchises wholly owned by Maurice “Mike” Glad of Modesto. Thirteen of the franchises are in the Bay Area, including four in San Jose, and nine are in the Central Valley.

The bureau sent 24 cars to Glad’s shops during the investigation. In one incident, the bureau report states a problem-free car was sent to a Glad’s Modesto Midas and $1,800 in unnecessary repairs were done.

The bureau’s report said Glad’s franchisees failed to follow accepted trade standards, made false or misleading statements and sold unnecessary or undelivered parts and services.

Glad has said any customers with concerns can call toll-free to 1-800-936-4327 and the business will be “sensitive to complaints.”

Consumers with questions or complaints can visit www.autorepair.ca.gov or call the state’s Department of Consumer Affairs toll-free at 1-800-952-5210.